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Subtract 8/42 from 15/25

15/25 - 8/42 is 43/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 42 is 1050
  2. For the 1st fraction, since 25 × 42 = 1050,
    15/25 = 15 × 42/25 × 42 = 630/1050
  3. Likewise, for the 2nd fraction, since 42 × 25 = 1050,
    8/42 = 8 × 25/42 × 25 = 200/1050
  4. Subtract the two fractions:
    630/1050 - 200/1050 = 630 - 200/1050 = 430/1050
  5. After reducing the fraction, the answer is 43/105

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